HMC985LP4KE v01.0813 GaAs MMIC VOLTAGE - VARIABLE ATTENUATOR, 10 - 40 GHz Typical Applications Features Wide Bandwidth: 10 - 40 g Hz t he HMC985l P4Ke is ideal for: excellent l inearity: +32 dB Input IP3 Point-to-Point r adio Wide attenuation r ange: 35 dB Vsat r adio n o external Matching t est Instrumentation 24 l ead 4x4 mm s Mt Package: 16 mm Microwave s ensors Military, eCM & r adar General Description t he HMC985l P4Ke is an absorptive Voltage Variable attenuator (VVa) which operates from 10 - 40 g Hz and Functional Diagram is ideal in designs where an analog DC control signal must be used to control r F signal levels over a 35 dB dynamic range. It features two shunt-type attenuators which are controlled by two analog voltages, Vctl1 and Vctl2. o ptimum linearity performance of the attenuator is achieved by first varying Vctl1 of the first attenuation stage from -3V to 0V with Vctl2 fixed at -3V. t he control voltage of the second attenuation stage, Vctl2, should then be varied from -3V to 0V with Vctl1 fixed at 0V. if the Vctl1 and Vctl2 pins are connected together it is possible to achieve the full analog attenuation range with only a small degradation in input IP3 performance. applications include ag C circuits and temperature compensation of multiple gain stages in microwave point-to-point and Vsa t radios. Electrical Specifications, T = +25 C, Test Condition Vctl1 = Vctl2 A Parameter Frequency Min. t yp. Max. u nits 10 - 20 g Hz 3 3.5 dB 1 Insertion l oss 20 - 30 g Hz 3 4 dB 30 -40 g Hz 3.5 4.5 dB 10 - 20 g Hz 25 30 dB attenuation r ange 20 - 30 g Hz 30 35 dB 30 - 40 g Hz 35 40 dB Input r eturn l oss 10 - 40 g Hz 13 dB o utput r eturn l oss 10 - 40 g Hz 13 dB Input t hird o rder Intercept 33 dBm 2 (two-tone input Power = 10 dBm each t one) 1 Vcntl1 = Vcntl2 =-2.4V 2 Vcntl1 = Vcntl2 =-2.0V worst case Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Phone: 781-329-4700 Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 1 Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D Application Support: Phone: 978-250-3343 or apps hittite.com attenuators - analog - s MtHMC985LP4KE v01.0813 GaAs MMIC VOLTAGE - VARIABLE ATTENUATOR, 10 - 40 GHz Attenuation vs. Frequency over Vctl1 = Attenuation vs. Frequency over Vctl1 = Variable, Vctl2 = -3V 0V, Vctl2 = Variable 0 0 -10 -5 -20 -10 -30 -40 -15 -50 -20 -60 -25 -70 10 15 20 25 30 35 40 10 15 20 25 30 35 40 FREQUENCY (GHz) FREQUENCY (GHz) -2.4V -1.2V 0.0V -2.4V -1.2V 0.0V -2.0V -0.8V -2.0V -0.8V -1.6V -0.4V -1.6V -0.4V Attenuation vs. Vctl1 Attenuation vs. Vctl2 Over Temperature 25 GHz, Vctl2 = -3V Over Temperature 30 GHz, Vctl1 = 0V 0 0 -5 -3 -10 -15 -6 -20 -25 -9 -30 -35 -12 -40 -15 -45 -2.4 -2 -1.6 -1.2 -0.8 -0.4 0 -2.4 -2 -1.6 -1.2 -0.8 -0.4 0 Vctrl1 (V) Vctrl1 (V) +25 C +85 C -40 C +25 C +85 C -40 C Attenuation vs. Pin 20 GHz over Vctl1 Attenuation vs. Pin 20 GHz over Vctl2 Vctl1 = Variable, Vctl2 = -3V Vctl2 = Variable, Vctl1 = 0V 0 0 -4 -10 -8 -20 -12 -30 -16 -40 -20 -24 -50 -5 -1 3 7 11 15 -5 -1 3 7 11 15 INPUT POWER (dBm) INPUT POWER (dBm) -2.4V -1.2V 0.0V -2.4V -1.2V 0.0V -2.0V -0.8V -2.0V -0.8V -1.6V -0.4V -1.6V -0.4V Information furnished by Analog Devices is believed to be accurate and reliable. However, no For price, delivery, and to place orders: Analog Devices, Inc., For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 rights of third parties that may result from its use. Specifications subject to change without notice. No Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Phone: 781-329-4700 Order online at www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 2 Trademarks and registered trademarks are the property of their respective owners. Application Support: Phone: 1-800-ANALOG-D Application Support: Phone: 978-250-3343 or apps hittite.com ATTENUATION (dB) ATTENUATION (dB) ATTENUATION (dB) ATTENUATION (dB) ATTENUATION (dB) ATTENUATION (dB) attenuators - analog - s Mt